@L1Zhao This was working before. I’ll add it to our TODO list. Thanks for reporting!
@DMeville Work for decal on water could be done for the current material system. This is not related to Substrate itself. I can confirm that it is in our backlog but it has not been at the top of our priority list so far. It will need some careful implementation because some decals might have to be applied on water, some not, some should be water only, etc.